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Buick · Known Issues

2018 Buick Enclave Problems: 1 Known Issue

2018 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Buick Enclave has 1 documented issue. None of the listed issues is rated critical; this is not a complete reliability assessment. DIY maintenance guides at au7o.io.

In This Article

  • Enclave Transmission1
  • Recalls11
  • FAQ
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In This Article

  • Transmission1
  • Recalls11
  • FAQ

All 1 Known Issue

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ALL YEARS2020201920182017201620152014201320122011201020092008

On the 2014-2020 Buick Enclave, both the 6-speed (first-gen) and the 9-speed 9T65 (second-gen, 2018+) Enclaves are prone to a torque converter clutch shudder felt as a vibration or 'chuggle' during light acceleration, low-speed lockup, or while climbing grades. On 2018-2019 models GM traced many cases to incorrect transmission fluid installed at the factory, addressing it under TSB 18-NA-091 (and PIP5608C). Left unaddressed, the shudder can accelerate clutch and converter wear.

This issue also affects: Buick Encore GX, Buick Regal, Cadillac DeVille

Common Symptoms

  • Shudder/vibration under light acceleration
  • Chuggle or jerk when transmission locks up
  • Vibration when accelerating uphill
  • Shudder around 25-45 mph

How to Fix

Per GM bulletin: flush and refill with the specified DEXRON-VI fluid (part 88862156) and reprogram the TCM with a fast-learn relearn. Persistent cases may require torque converter replacement.

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026
NHTSA Recalls11 recalls

TIRES

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.

Campaign #21V11500025/02/2021

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, Cadillac XT6, Chevrolet Traverse, and GMC Acadia vehicles. The fuel pump's jet nozzle may have a plastic burr remaining from the manufacturing process, possibly causing a blocked nozzle and an insufficient fuel supply to the engine.

Campaign #20V63900015/10/2020

TIRES

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500 vehicles. The vehicles may have been manufactured with Continental tires that were overcured.

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Other Buick Models

Buick Encore25Buick Cascada22Buick Regal13Buick Envision12Buick Encore GX12Buick LaCrosse11

Frequently Asked Questions

What are the most common Buick Enclave problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Buick Enclave has 1 documented issue. The documented issue is: Torque Converter Clutch (TCC) Shudder. None are rated critical, but regular maintenance is recommended.

Is the Buick Enclave reliable?

The 2018 Buick Enclave has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

What is the 2014-2020 Buick Enclave Torque Converter Clutch (TCC) Shudder?

Both the 6-speed (first-gen) and the 9-speed 9T65 (second-gen, 2018+) Enclaves are prone to a torque converter clutch shudder felt as a vibration or 'chuggle' during light acceleration, low-speed lockup, or while climbing grades. On 2018-2019 models GM traced many cases to incorr… Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

Campaign #20V68400005/11/2020

AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR

General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehicles. The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment.

Campaign #20V44600030/07/2020

STRUCTURE:FRAME AND MEMBERS

General Motors LLC (GM) is recalling certain 2020 Buick Enclave and Chevrolet Traverse vehicles. The right-hand frame rail in the engine compartment may be cracked.

Campaign #19V64300006/09/2019

+ 6 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.